63667876636 has 48 divisors (see below), whose sum is σ = 137151705600. Its totient is φ = 25183454400.

The previous prime is 63667876619. The next prime is 63667876669.

63667876636 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4250961 + ... + 4265911.

It is an arithmetic number, because the mean of its divisors is an integer number (2857327200).

Almost surely, 2^63667876636 is an apocalyptic number.

It is an amenable number.

63667876636 is an abundant number, since it is smaller than the sum of its proper divisors (73483828964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63667876636 is a wasteful number, since it uses less digits than its factorization.

63667876636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26674 (or 26672 counting only the distinct ones).

The product of its digits is 164602368, while the sum is 64.

The spelling of 63667876636 in words is "sixty-three billion, six hundred sixty-seven million, eight hundred seventy-six thousand, six hundred thirty-six".